EPJ

2021 Impact factor 4.991
EPJ C - Particles and Fields
Particles and Fields


Eur. Phys. J. C 22, 255-267 (2001)
DOI: 10.1007/s100520100814

A study of $\Sigma^{\pm}$, $\Sigma^{*\pm}$ and $\overline{\Sigma}^-_{1385}$ production in the hyperon beam experiment WA89 at CERN

The WA89 Collaboration1, M.I. Adamovich2, Yu.A. Alexandrov2, S.P. Baranov2, D. Barberis3, M. Beck4, C. Bérat5, W. Beusch6, M. Boss7, S. Brons4, W. Brückner4, M. Buénerd5, Ch. Busch7, Ch. Büscher4, F. Charignon5, J. Chauvin5, E.A. Chudakov7, U. Dersch4, F. Dropmann4, J. Engelfried7, F. Faller7, A. Fournier5, S.G. Gerassimov2, M. Godbersen4, P. Grafström6, Th. Haller4, M. Heidrich4, E. Hubbard4, R.B. Hurst3, K. Königsmann4, I. Konorov4, 2, N. Keller7, K. Martens7, Ph. Martin5, S. Masciocchi4, R. Michaels4, U. Müller8, H. Neeb4, D. Newbold1, C. Newsom9, S. Paul4, J. Pochodzalla4, I. Potashnikova4, B. Povh4, R. Ransome9, Z. Ren4, M. Rey-Campagnolle5, G. Rosner8, L. Rossi3, H. Rudolph8, C. Scheel9, L. Schmitt8, H.-W. Siebert7, A. Simon7, V. Smith1, O. Thilmann7, A. Trombini4, E. Vesin5, B. Volkemer8, K. Vorwalter4, Th. Walcher8, G. Wälder7, R. Werding4, E. Wittmann4 and M.V. Zavertyaev2

1  University of Bristol, Bristol, UK
2  Moscow Lebedev Physics Inst., 117924, Moscow, Russia
3  Genoa Univ./INFN, Dipt. di Fisica, 16146 Genova, Italy
4  Heidelberg Max-Planck-Inst. für Kernphysik, Postfach 103980, 69029 Heidelberg, Germany
5  Grenoble ISN, 38026 Grenoble, France
6  CERN, 1211 Genève 23, Switzerland
7  Universität Heidelberg, Physikalisches Institut, 69120 Heidelberg Germany (Supported by the Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie, Germany, under contract numbers 05 5HD15I, 06 HD524I and 06 MZ5265)
8  Universität Mainz, Inst. für Kernphysik, 55099 Mainz, Germany
9  University of Bristol, Bristol, UK CERN, 1211 Genève 23, Switzerland Genoa Univ./INFN, Dipt. di Fisica, 16146 Genova, Italy Grenoble ISN, 38026 Grenoble, France Heidelberg Max-Planck-Inst. für Kernphysik, Postfach 103980, 69029 Heidelberg, Germany Universität Heidelberg, Physikalisches Institut, 69120 Heidelberg Germany (Supported by the Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie, Germany, under contract numbers 05 5HD15I, 06 HD524I and 06 MZ5265) Universität Mainz, Inst. für Kernphysik, 55099 Mainz, Germany Moscow Lebedev Physics Inst., 117924, Moscow, Russia

(Received: 4 February 2001 / Revised version: 25 June 2001 / Published online: 12 November 2001 - © Springer-Verlag / Società Italiana di Fisica 2001 )

Abstract
We report on a measurement of the inclusive production cross sections for $\Sigma^{\pm}$, $\Sigma^{\pm}_{1385}$, $\Sigma^{\pm}_{1660}$ and $\overline{\Sigma}^-_{1385}$ in the CERN hyperon beam experiment WA89, using a $\Sigma^- / \pi^-$ beam of 345 GeV/c momentum and neutrons of 260 GeV/c mean momentum. A strong leading particle effect was observed for all negative $\Sigma$ and $\Sigma^*$. The results are compared with predictions from phenomenological models.



© Società Italiana di Fisica, Springer-Verlag 2001

Conference announcements